Drivers for CSR Bluetooth modules are built into Windows XP/7/8 so you do not need to install any software or download anything: other bluetooth drivers or 'stacks' such as BlueSoleil are not as good as the Windows stack and will cause problems. Just plug it in and let windows auto-install the BT driver! For Linux (Raspberry Pi), use Bluez which works great, simply follow the tutorials below!

We've gotten some reports that these modules share a small pool of MAC addresses, so you may get some with the same MAC. That means you cannot use two of them in the same room/computer or they'll collide the RF data. For most people, you only need one per computer however.